Road-scraper-adjusting mechanism



D. E; BURNS ROAD SCRAPER ADJUSTING MECHANISM Filed Sept. 8, 1925 mm); M

- parts in the Patented Apr. 19, 1927.

warren STATES DAVID E. BURNS, OIE GRAND EXECUTOR OF SAID BURNS, DECEASED,

GRAND RAPIDS, MICHIGAN.

PATENT OFFICE.

ASSIGNOR TO CHARLES G. WILLETT, 0F

ROAD-SCRAPER-ADJUSTING MECHANISM.

Application filed September This invention relates to a controlling device for road scrapers by means of which a scraper may be adjusted so as to be elevated above or depressed to come into contact with the surface of the road which is to be scraped. It is a primary object and purpose of the present invention to provide a very simple operating means for thus adjusting the scraper blade and one which can be readily applied to smaller sized trucks, such for instance as Ford trucks which are used in road building and particularly in road maintenance. I The control device which I have devised is to be mounted near one end of the drivers seat and in a position where it is readily accessibleto the driver. The invention comprises many novel details of construction and arrangements of parts for effectively attaining the above stated ends as well as others not at this time specifically stated but which will appear as understanding of the invention is had from the following description taken in connection with the accompanying drawing, in which,

Fig. l is a side elevation of a truck equipped with a road scraper and with the adjusting device of my invention.

Fig. 2 is a fragmentary elevation, with parts in section and shown in an enlarged scale, of the road scraper and the controlling means for adjusting the same, and

Fig. 3 is a vertical section substantially on the plane of line 3-3 of Fig. 2.

Like reference characters refer to like different figures of the drawing. The truck may be of the usual type and in practice the Ford which this device is most commonly attached. It has chassis frame members 1 and a drivers seat 2 located between the body 3 at the rear and the cowl and hood 4 at the front'of the truck.

Located below the chassis frame and p0si 5' tioned horizontally and diagonally across said frame is a supporting beam 5, which in turn is connected to and supported by the chassis frame members by suitable hanger brackets 6. From the under side of the beam 5 a plurality of spaced apart depending fingers 7 extend, on each of which a block 8 is adjustably mounted, each of said blocks extending rearwardly from the support 7 to which it is attached. A rock shaft truck is the one to 8, 1925. Serial No. 54,890.

9 passes through all of the blocks and has a rocking mount therein, this shaft being located substantially horizontal. A scraper blade 10 is located back of the shaft and is connected thereto at a plurality of spaced apart points by the members 11 which are formed from spring rod and are coiled around the shaft 9 similar to the construction shown in my Patent No. 1, l29,125 on road scrapers, issued September 12, 1922. An arm 12 is rigidly secured to the shaft between its ends and nearer one end than the other extending forwardly from the shaft andterminating at its front end in a laterally turned pin 12 A bracket is attached to the left hand side of chassis frame member 1, said bracket comprising a downwardly extending arm 13 bolted to the frame member 1 which, at its upper end, is turned outwardly at right angles making a short section 14 and then turned upwardly and outwardly at an angle to the vertical to make a section 15, which, at its upper end, terminates in an outwardly extending horizontal pin 16. A diagonal brace bar 17 is disposed between the lower end of the part 13 and the section 15, being bolted at its end to these sections. A rod 18 is flattened at one end and has an opening through it so that the same may .pass over the pin 16, said rod 18 extending clownwardly and inwardly toward the chassis frame member and being screw threaded at its lower end. A second brace bar 19 has an opening at one end so that it may pass over the pin 16 and at its opposite end lies against the outer side of the frame member 1, being bolted thereto. A suitable cotter pin 20 passes through the outer end portion of the pin 16 to retain members 18 and 19 in place on the pin 16. A second rod 21 is located in alignment with the rod 18 and at its lower end is flattened and has an opening made therethrough so that it may be placed over the pin 12, being retained thereon by a suitable cotter pin. The upper end of the rod 21 is threaded but the threads on this rod are cut opposite to those on the lower end of the rod 18, that is, one of the rods is equipped with a right hand thread and the other with a left hand thread. A hand wheel 22 is located between the rods 18 and 21 and formed with elongated sleeves 23 extending in opposite directions-from the wheehsaidsleeves being suitably threaded interiorly to receive the threaded ends of the rods 18 and 21, that is, one sleeve with arighthand thread and the other with a left hand thread.

It is evident that by turning the wheel 22, which is located adjacent the drivers seat and in a position so as to be accessible to the driver, the rod 21 may be moved lengthwise toward or away'fron'i rod 18 depending upon the direction of rotation of the hand wheel 22. YVhen the same is moved out wardly away from rod 18 the rock shaft 9 is turned to'elevate the scraper blade 10 and when the hand wheel is turned so as to draw said rod 21 toward the rod 18 the scraper blade 10 is depressed and its edge brought into engagement with the road surface over which the truck runs.

This construction is very simple yet strong and durable. It comprises but few elements, all of which are readily made and assembled at low cost. The simplicity, durability and ready accessibility of the-'devicefor manual operation makes the construction one of value, as it has proved in practice. The appended claims define the invention which is 'to be considered as comprehensive of all forms of structure coming within their scope.

I claim: 1 In combination with a vehicle having a frame, a rock shaft located below the frame and mounted for rocking movements, an arm extending from the rock shaft, a scraper blade carried by said rock shaft, a bracket attached to the'frame at one side in front of and above the rock shaft, a rod secured at one end to said bracket, a second rod connected with said arm on the rock shaft extending toward the first rod, and a hand wheel having an elongated sleeveextending from each side thereof said rods at their adjacent ends being oppositely screw threaded, and the said sleeves being correspondingly threaded to receive the said threaded ends of the rods.

2. In combination with a vehicle having a frame a rock shaft mounted for rocking movement s below the frame, a scraper blade carriedby said rock shaft, a rod attached at one end to the frame at one side thereof and above and forward of said rock shaft, said rod extending towardthe rock shaft, said rod being threaded at its lower free end, an arm extending from the rock shaft, a second rod connected with said arm and extending toward the first rod, said second rod being threaded at its upper free end oppositely to the threading of the first rod, and an operating member disposed between the adjacent ends of said rods having a sleeve extending from each side thereof, said sleeves being oppositely threaded to receive the threaded ends of the rods.

*8. Incoinbination with a vehicle'having ing upwardly,

a frame, a rock shaft mounted for-rocking movements below the frame, a scraper blade carried by said rock shaft, an arm extending from the rock shaft, arod connected with the arm and extending upwardly and forwardly therefrom, a bracket-attached to the frame at one side thereof and extending out- 'wardly therefrom, a second rod attached at one end to the bracket and extending toward the first rod, and operating means located between the adjacent ends of said rods and operatively connected thereto to move said rods longitudinally toward or away from each other.

4. In combination with a a frame, a rock shaft located below the frame and mounted for rocking movements, a scraper blade carried by said rock shaft, anarm extending from the rock shaft, a rod pivotally connectedto said arm and extendoutwardly and forwardly therefrom, said rod being screw threadedat its forward end, ascrew threaded'sleeve iiito which the threaded end of the rod extends, means for manually turning said sleeve, and

, means holding the sleeve against movement toward the rockishaft when it is turned in one direction and against movement away from the rock shaft when it is turned in the opposite direction.

5. In combination witha vehicle having a frame, a rock shaft located below the-frame and mounted for rocking I movements, a scraper blade carried by said rock shaft, an arm extending from said rock shaft, a rod pivotally connected to said arm and extending upwardly, outwardly and forwardly therefrom, said rod being screw threaded at its forward end, a sleeve having connection to the frame threaded to receive the forward end of the rod, and means to manually turn said sleeve.

6. In combination with a vehicle having a frame, a rock shaft located below the frame and mounted for rocking movements, a scraper blade carried by the rock shaft, an arm secured to the rock shaft, a rod pivotally connected to the arm and extending outwardly, forwardly and upwardly therefrom, said rod being threaded a portion of its lengtlnand threaded means rotatably mounted on said threaded portion of the rod and manually operable to move the rod lengthwise in either direction on rotation of said means in either direction.

7. In combination with a Vehicle'having a frame, a rock shaft mounted'below the frame for rocking movements, a scraper blade carried by the rock shaft, a rotatably mounted interiorly threaded sleeve disposed at a side of the frame substantially opposite the driving compartment of the vehicle, a rod, threaded at one end and pass ng into. said sleeve, and means connecting said rod to the rock shaft at'its other end vehicle having whereby on longitudinal movement of the rod the scraper blade is changed in position, said longitudinal movement of the rod occurring on turning said sleeve.

8. In combination with a vehicle having a frame, a rock shaft mounted for rocking movements below the frame, a bracket attached to a side of the frame and extending outwardly therefrom, a pin extending outwardly from said bracket, a rod pivotally mounted at one end on said pin, an arm attached to the rock shaft, a scraper blade carried by said rock shaft, a second rod pivotally connected at one end to said arm and extending toward and located in alinement with the first rod, and manually operable means interposed between and connected to both rods adapted on operation thereof to move the second rod longitudinally toward and away from the first rod.

In testimony whereof I alfix my signature.

DAVID E. BURNS. 

